JPS6346461Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a lifting device such as a block, and more specifically, to a device to be lifted (such as a block).
A hanging device that is convenient and easy to use for raising and lowering blocks, etc., in places such as rivers, lakes, coasts, cliffs, etc., which are difficult to access and difficult for workers to access directly. Regarding the opening/closing mechanism.

[Conventional technology]

Hitherto, as this type of hanging device, for example, a "lifting scissor" as described in Japanese Patent Publication No. 49-35375, or a "block clamping device" as described in Japanese Utility Model Publication No. 55-3198 have been known. ing.

In the former "lifting scissors", the fulcrum parts of the X-shaped scissors member are each pivoted on both ends of a pivot rod based on the lever principle, and the inverted V-shaped arm is attached to the upper end of each upper V-shaped arm of the pivot shaft. are connected to form a diamond-shaped pantograph shape, and the intersections of the inverted V-shaped arms are connected by a horizontal rod. When the diamond-shaped pantograph is folded, the article holding member of the X-shaped scissors member is When it is opened and placed so as to face the object to be lifted in that state, when the horizontal shaft portion is lifted by a crane or the like, the diamond-shaped pantoclaf extends vertically from the folded state, and the object holding member closes.
The object holding member is used to grasp and lift an object such as a block.

In addition, the latter "block clamping device" is the same as the above-mentioned "lifting scissors" in that it uses an X-shaped scissors member that utilizes the principle of levers of a fulcrum, a force point, and an important point (point of action). The difference from the "Lifting Scissors" is that there is an inverted V at the top of each of the upper V-shaped arms.
Rather than connecting the two square arms, the two horizontal rods are parallel to each other at the upper ends of the pair of square arms. The structure is as follows.

A slider is provided at the center between the two horizontal shafts in a parallel state, and the slider portion is configured such that a center shaft provided upright on the support shaft can move up and down, and When the horizontal axis bar in the state is lifted by a forklift or the like, the object holding member of the X-shaped scissors closes, and the object is grasped and lifted by the object holding member.

[Problem that the invention attempts to solve]

By the way, the conventional "lifting scissors" and "block clamping devices" mentioned above do not allow the lifting tool to be
The article engaging member formed at the lower end of the scissors member can be freely opened and closed.

However, in order to maintain the open/closed state of the article holding member of the X-shaped scissors member, a specially shaped latch body (the former)
This type of machine, which is used for rough work, not only requires two parallel horizontal shaft bars and a slider mechanism (the latter), but also requires a high degree of design dimension. There were problems such as causing malfunctions.

The present invention was devised in response to the above-mentioned points, and its purpose is to eliminate the need for workers other than machine operators such as cranes, and to be particularly effective in places with poor working conditions. The purpose of the present invention is to provide an opening/closing mechanism for a hanging device that exhibits the desired effect.

[Means for solving problems]

In the opening/closing mechanism of the hanging device of the present invention as a means for achieving the above object, the fulcrum portions of the X-shaped scissors member are respectively pivotally supported at both ends of the support shaft member, and the upper side of the pivot portion is shaped like a V-shape. An inverted V-shaped arm is connected to the upper end of each arm to form a diamond-shaped pantograph shape, and the lower end of the X-shaped scissors member is provided with an article holding member, the inverted V-shaped The intersecting parts of the arms are connected by a horizontal shaft member having a vertical through hole in the center, and a hollow center shaft is erected and fixed to the support shaft member, and the center shaft is inserted through the horizontal shaft member in the vertical direction. The horizontal shaft member is fitted into the hole so as to be movable up and down with respect to the center shaft, and a side opening hole is bored at the upper part of the hollow center shaft, so that the horizontal shaft member can move freely in and out of the opening hole. A movable member is pivotally mounted in the hollow center shaft, and a rod that moves up and down in the axial direction of the shaft and has a lead member at its lower end is inserted into the hollow center shaft, while the support shaft member is made hollow. A reversible piece is provided on the front center of the support shaft member, and a curved hole is opened along the side of the reversible piece. The lead member is oriented so as to be guided along the edge of the hole, and a depression groove for the lead member is provided at the lower end of the curved hole, and when the horizontal shaft member is lowered downwardly, A pressing part that presses the upper part of the reversing piece to reverse it, and a swinging member engaging part that engages with the swinging member that comes out and retracts from the opening hole of the center shaft are provided, and the reversing piece and the lead member are engaged with each other. In this case, the swinging member is caused to protrude from the side opening hole at the tip of the rod, thereby engaging the swinging member with the swinging member engaging portion of the horizontal shaft member, thereby causing the swinging member to engage with the swinging member engaging portion of the horizontal shaft member. The upward movement of the shaft member is prevented, and the swinging member is retracted into the shaft by its own weight due to the lowering of the rod, thereby releasing the engagement of the horizontal shaft member and allowing upward movement. It consists of a configuration like this.

[Effect]

The opening/closing mechanism of the hanging device of the present invention based on the above structure can be used, for example, when transporting blocks for river erosion control work or embankment work, which may be difficult to transport manually. Sometimes, both ends of a rope are fixed to both ends of the horizontal shaft member, and when a crane hook is hooked to the rope and lifted, the article holding member of the X-shaped scissors member is lifted while being held in an open state, It is used by moving it to the top of the stacked blocks in advance.

Then, the object holding member of the X-shaped scissors straddles the target block, and the object holding member is lowered onto the block, and is lightly lifted and lowered, so that the rod is dropped and oscillated. The member is retracted and stored in the center shaft, the diamond-shaped pantoclaf can be extended vertically from the folded state, and the article clamping member of the X-shaped scissor member is closed, and the article clamping member grasps and lifts the block. I can do it. Therefore, it functions so that it can be lifted and transported to places where manual transport is difficult.

As described above, the opening/closing mechanism of the hanging device of the present invention is
This has a special effect in that the hanging operation can be performed easily.

〔Example〕

Hereinafter, embodiments embodying the present invention will be described with reference to the drawings.

Here, FIGS. 1 to 8 show one embodiment of the present invention, FIG. 1 is a side sectional view of the main part of the swinging member housed in the center shaft, and FIG. 3 is a side sectional view of the main part with the swinging member pushed out of the center shaft, FIG. 4 is a partially cutaway front view of FIG. 3, and FIG. 5 is a partially cutaway front view of the figure. FIG. 6 is a front view, FIG. 6 is a side view, and FIGS. 7 and 8 are perspective views for explaining the state of use.

The opening/closing mechanism of the lifting device of this embodiment is such that the crane operator automatically opens the main body by applying a shock to the ground or a block by applying a shock to the main body 1, or by raising and lowering the main body 1 up and down. 1 can be opened and closed.

The main body 1 is a scissor-shaped hanging tool itself, and the scissor-shaped hanging tool has X-shaped scissor members 3 at both ends of a support shaft member 2.
The fulcrum portions 4 of the fulcrum portions 4 are each pivoted, and an inverted V-shaped arm 6 is connected to the upper end of each upper V-shaped arm 5 of the pivot support to form a rhombic pantograph shape, and the inverted V-shaped arm 6 The intersections of the two are connected by a horizontal shaft member 7.

At the lower end of the X-shaped scissors member 3, object hangers 8, 8, which are article holding members, are provided, and at both ends of the object hanger 8, anti-slips 9 are provided.

The support shaft member 2 has a hollow center shaft 10.
is erected and fixed, and a fitting cylinder 12 is fitted in a through hole 11 of the horizontal shaft member 7 with respect to the center shaft 10 so as to be vertically slidable. A swinging member 14 that is pivoted 13 is provided at an upper position within the center shaft 10.
The distal end portion thereof can emerge and retract from the side opening hole 15 of 0.

Then, the swinging member 14 is attached to the center shaft 10.
A mechanism for projecting outward is provided over each of the support shaft member 2, the center shaft 10, and the horizontal shaft member 7. That is, the rod 1 moves vertically in the axial direction of the center shaft 10 inside the hollow center shaft 10 and is provided with a lead member 16 at the lower end.
7 is inserted, and on the other hand, the support shaft member 2 is formed hollow, and the central front part of the hollow support shaft member 2 is formed into a plane body 18, and the plane body 18 is provided with an inversion piece 19, and the side of the inversion piece 19 is A curved hole 20 is opened to the side, and the lead member 16 of the rod 17 inserted into the center shaft 10 is oriented so that it is guided along the curved hole edge 20' of the curved hole 20,
In addition, the lead member 1 is attached to the lower end of the profiled curved hole 20.
6 is recessed, and furthermore, a pressing member 22 is provided on the horizontal shaft member 7 to press the upper part of the reversing piece 19 and reversing it when the horizontal shaft member 7 is lowered, and the reversing piece 19 By scooping up the lead member 16 and lifting the rod 17, the rod 17 is removed.
The swinging member 14 is made to protrude from the side opening hole 15 at the tip thereof. Then, on the swinging member 14,
Fitting cylinder 1 provided in through hole 11 of horizontal shaft member 7
The swinging member engaging portion 23 on the upper edge of the shaft 10 engages with the swinging member 14, thereby preventing the upward movement of the horizontal shaft member 7, and lowering the rod 17 moves the swinging member 14 toward the shaft 10.
The swinging member engaging portion 23 and the swinging member 1 are retracted inward by their own weight and are formed at the upper edge of the through hole of the horizontal shaft member 7.
The structure is such that the engagement with 4 is released and it becomes possible to move upward.

Next, the operation of this embodiment will be described. When lifting the X-shaped scissors member 3, which is provided with the object hangers 8, 8, which are the object holding members, with the object held open, when the main body 1 lands on the ground, the rope 24 is loosened and the horizontal shaft member 7 is lowered by its own weight, and the pressing member 22 pushes the upper part of the reversing piece 19 downward, so that the tip of the reversing piece 19 is reversed upward, kicking up the lead member 16 and pushing up the rod 17. Then, the upper end of the rod 17 hits the curved surface of the swinging member 14, and the swinging member 1
4 into the side opening hole 1 of the center shaft 10
Push it outward from 5 and make it protrude. In this case, in FIG. 4, after the rod 17 is pushed up by the reversing piece 19, the horizontal shaft member 7 is at a position where its upward movement is restricted by the swinging member 14 and the swinging member engaging portion 23. At this time, the reversing piece 19 reverses itself due to its own weight and returns to its original position as shown in Figure 7.
The rod 17 is maintained in the pushed up state as shown in FIG. Therefore, since the diamond-shaped pantograph is maintained in a folded state, the X-shaped scissors member 3
can be lifted with the objective hangers 8, 8 open.

When the main body 1 with the object hangers 8, 8 open is moved onto the block to be lifted and then lowered, the shock guide bar 25 hits the top surface of the block, and the shock lifts the rod 17 and the lead member 16. is lowered, during which time the rope 24 is loosened and the horizontal shaft member 7 is also lowered by its own weight, and the swinging member 14 loses its support and retracts into the center shaft 10. As a result, the upward movement of the horizontal shaft member 7 is not restricted, and the diamond-shaped pantograph extends as shown in FIG. It constricts and locks the object so that it can be lifted and transported.

Then, after transporting the block, lower it to the target position,
When the hook of the crane is further lowered slightly to loosen the rope 24, the horizontal shaft member 7 is lowered by its own weight as described above, and the pressing member 22 pushes the upper part of the reversing piece 19 downward, so that the swinging member is moved by the reversing piece 19. 14, the object hangers 8, 8 open as shown in FIG. 7, and the block can be completely taken down.
The above work is repeated.

In addition, when lifting with the objective hangers 8, 8 closed, place the main body 1 on the ground, lift it lightly,
When the suspension is carried out, the lead member 16 located at the upper part of the profiling curve hole 20 falls down together with the rod 17 and settles in the groove 21, and the swinging member 14 is retracted into the center shaft 10, so that the horizontal shaft member The object hanger 7 also functions to be able to move upward without being restricted midway and lift the object hangers 8, 8 while being closed.

In addition, in consideration of the possibility that the lifting device with the above structure may be damaged and the work becomes difficult, the center shaft 1
For example, by inserting a spare pipe into the 0, manual operation is possible. Further, a shaft as a heavy cone may be provided at the lower end of the rod 17.

Incidentally, it is clear that the present invention is not limited to the above-described embodiments, and includes modifications that can be made without changing the gist of the present invention.

[Effect of idea]

As is clear from the above description, according to the opening/closing mechanism of the hanging device of the present invention, the structure is simple;
In addition, the system can be operated only by the operator of a crane or the like, without requiring the hands of other workers, and is particularly effective in working in places with poor working conditions.

[Brief explanation of the drawing]

1 to 8 show an embodiment of the present invention, FIG. 1 is a side sectional view of the main part of the swinging member housed in the center shaft, and FIG. 2 is a view similar to that shown in FIG. 3 is a side sectional view of the main part with the swinging member pushed out of the center shaft, FIG. 4 is a partially cutaway front view of FIG. 3, and FIG. 5 is a front view. FIG. 6 is a side view, and FIGS. 7 and 8 are perspective views for explaining the state of use. DESCRIPTION OF SYMBOLS 1... Main body, 2... Support shaft member, 3... X-shaped scissors member, 4... Fulcrum part, 5... Upper V-shaped arm, 6...
...Inverted V-shaped arm, 7... Horizontal shaft member, 8... Article holding member (object hanger), 9... Anti-slip, 10...
...Hollow center shaft, 11...Through hole, 1
2... Fitting cylindrical body, 13... Pivoting, 14... Swinging member, 15... Side opening hole, 16... Lead member,
17... Rod, 18... Flat body, 19... Inverted piece, 20... Profile curved hole, 20'... Curved hole edge,
21... Depression groove, 22... Pressing member, 23...
... Swinging member engaging portion, 24... Rope, 25... Shock guide bar.

Claims (1)

[Scope of utility model registration request] A fulcrum part of an X-shaped scissor member is pivotally supported at both ends of the support shaft member, and an inverted V-shaped arm is connected to the upper end of each upper V-shaped arm of the pivot support to form a diamond-shaped pantograph shape, and In the hanging tool having an article holding member at the lower end of the X-shaped scissors member, the intersection parts of the inverted V-shaped arms are connected by a horizontal shaft member having a vertical through hole in the center, and A hollow center shaft is erected and fixed to the shaft member, and the center shaft is fitted into the vertical through hole of the horizontal shaft member so that the horizontal shaft member can freely move up and down with respect to the center shaft, and A side opening hole is bored in the upper part of the hollow center shaft, and a swinging member that can freely come out and go out from the opening hole is pivotally attached to the inside of the hollow center shaft. A rod that moves up and down and has a lead member at the lower end is inserted, and the support shaft member is formed hollow, and a reversal piece is provided in the center front of the support shaft member, and a curved line is formed following the side of the reversal piece. A hole is opened, and a rod lead member inserted into the center shaft is oriented so as to be guided along the curved hole edge of the profiled curved hole, and the lead member is attached to the lower end of the profiled curved hole. The horizontal shaft member is further provided with a pressing portion that presses the upper part of the reversing piece to reverse it when the horizontal shaft member is lowered, and a rocker that protrudes and retracts from the opening hole of the center shaft. A swinging member engaging portion that engages with the swinging member is provided, and when the reversing piece engages with the lead member, the swinging member is caused to protrude from the side opening at the tip of the rod, thereby causing the swinging. The member is engaged with the swinging member engaging portion of the horizontal shaft member, thereby preventing upward movement of the horizontal shaft member, and as the rod is lowered, the swinging member is loaded with its own weight within the shaft. 1. An opening/closing mechanism for a hanger, characterized in that the hanger is retracted by the user, whereby the engagement of the horizontal shaft member is released and the hanger can be moved upwardly.